Round|Natural|GIA

1.70ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 2151883067

Certificate GIA 2151883067

Diamond specifications and retailer prices

From $16,159 USD
As of November 2, 2026
Save $6,621 USD (29%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $31,448 USD at Diamond Quarter · As of November 2, 2026
View at Diamond Quarter

About this 1.7ct natural round diamond

This 1.7ct natural round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2151883067. Listed at 20 retailers as of November 2, 2026, with a 41% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.70
Carat
F
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2151883067
Dimensions7.66 × 7.63 × 4.71 mm
L/W Ratio1.00
Culet sizeNone
Top View
7.66 mm7.63 mm1.70 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2151883067
Side View
Table 56.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 61.7%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $21,635 USD|Low: $15,475 USD|High: $29,351 USD|Avg: $20,825 USD|+2.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 9$16,159 USD
Retailer 5$16,170 USD
Retailer 6$17,796 USD
Retailer 3$19,027 USD
Retailer 7$19,353 USD
Retailer 8$19,498 USD
Retailer 1$21,635 USD
Retailer 4$27,282 USD
Retailer 2$29,002 USD

43 data points across 9 retailers

20 retailers$16,159 USD to $22,780 USD

B
Cheapest Retailer
-
$16,159 USD
B
Retailer 2
-
$16,170 USD
View
B
Retailer 3
-
$17,021 USD
View
B
Retailer 4
-
$17,072 USD
View
B
Retailer 5
-
$17,432 USD
CA$24,212 CAD
View
B
Retailer 6
-
$17,796 USD
View
Final sale: no returns
B
Retailer 7
-
$18,150 USD
View
B
Retailer 8
-
$18,570 USD
View
B
Retailer 9
-
$19,027 USD
£14,982 GBP
View
Retailer 10
-
$19,353 USD
A$29,773 AUD
View
Price last confirmed 30 days ago
B
Retailer 11
-
$19,498 USD
View
B
Retailer 12
-
$20,117 USD
View
B
Retailer 13
-
$20,891 USD
View
B
Retailer 14
-
$21,618 USD
View
B
Retailer 15
-
$21,635 USD
€20,605 EUR
View
B
Retailer 16
-
$22,780 USD
View
Retailer 17
-
$26,307 USD
View
Price under review
Retailer 18
-
$27,282 USD
ZAR 440,745 ZAR
View
Price under review
Retailer 19
-
$29,002 USD
£22,836 GBP
View
Price under review
Most Expensive
Diamond Quarter
1.7SI1F21672373N · Nov 2
$31,448 USD
£24,762 GBP
View
Price under review
19 more retailers have this diamond
Prices start from $16,159 USDSave up to $6,621 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B
1.70ct Round
$16,159 USD